Welcome to Puzzles, to date one of the most enduringly busy forums on hard-facts.
Anyone can answer questions in here (Guests too - please do! ) You don't have to complete a full set - just answer any that spring to mind in that coffeetime break. Or dash off the lot if you like! 
Always more in the pipeline...
There are usually at least 4 lots of questions posted daily and mostly more, we try to vary them between Trivia, word puzzles, anagrams, blockbuster-style qs, picture qs and anything else we find that looks interesting.
Everyone is also welcome to post their own puzzles for us to do - it's always nice to get a breath of fresh air and alternative ideas.
Sometimes interesting issues arrive from various questions and debates ensue, or puzzlers volunteer extra information: all of which is very welcome too
League Puzzles is a separate forum and also open to everyone, though owing to the hidden-text nature of the forum, Guests can't post in there until they register to hard-facts and log on with their username.
Owing to the frequency of topics posted in the Puzzles Forum, some may be missed if you rely on the 'three latest topics' on the right hand side of the index page: always worth opening the whole Puzzles forum and scanning down the list for unsolved ones which may have sunk down out of sight.
Have fun and remember, all are very welcome to either post questions or answer them - the more the merrier, to coin a phrase 